DevUI_Step01_BasicUsage

DevUI Step 01 - Basic Usage

This sample demonstrates how to add the DevUI to an ASP.NET Core application with AI agents.

What is DevUI?

The DevUI provides an interactive web interface for testing and debugging AI agents during development.

Configuration

Set the following environment variables:

• AZURE_OPENAI_ENDPOINT - Your Azure OpenAI endpoint URL (required)
• AZURE_OPENAI_DEPLOYMENT_NAME - Your deployment name (defaults to "gpt-5.4-mini")

Running the Sample

1. Set your Azure OpenAI credentials as environment variables
2. Run the application:

   dotnet run

3. Open your browser to https://localhost:50516/devui
4. Select an agent or workflow from the dropdown and start chatting!

Sample Agents and Workflows

This sample includes:

Agents:

• assistant - A helpful assistant
• poet - A creative poet
• coder - An expert programmer

Workflows:

• review-workflow - A sequential workflow that generates a response and then reviews it

Adding DevUI to Your Own Project

To add DevUI to your ASP.NET Core application:

1. Add the DevUI package and hosting packages:

   dotnet add package Microsoft.Agents.AI.DevUI
   dotnet add package Microsoft.Agents.AI.Hosting
   dotnet add package Microsoft.Agents.AI.Hosting.OpenAI

2. Register your agents and workflows:

   var builder = WebApplication.CreateBuilder(args);
   
   // Set up your chat client
   builder.Services.AddChatClient(chatClient);
   
   // Register agents
   builder.AddAIAgent("assistant", "You are a helpful assistant.");
   
   // Register workflows
   var agent1Builder = builder.AddAIAgent("workflow-agent1", "You are agent 1.");
   var agent2Builder = builder.AddAIAgent("workflow-agent2", "You are agent 2.");
   builder.AddSequentialWorkflow("my-workflow", [agent1Builder, agent2Builder])
       .AddAsAIAgent();

3. Add OpenAI services and map the endpoints for OpenAI and DevUI:

   // Register services for OpenAI responses and conversations (also required for DevUI)
   builder.Services.AddOpenAIResponses();
   builder.Services.AddOpenAIConversations();
   
   var app = builder.Build();
   
   // Map endpoints for OpenAI responses and conversations (also required for DevUI)
   app.MapOpenAIResponses();
   app.MapOpenAIConversations();
   
   if (builder.Environment.IsDevelopment())
   {
       // Map DevUI endpoint to /devui
       app.MapDevUI();
   }
   
   app.Run();

4. Navigate to /devui in your browser